Epicardial VTs were targeted opposite normal endocardium in 10 patients (77%) and/or opposite ineffective endocardial ablation sites in 11 patients (85%).

• 心外膜VTs被定位到正常心内膜对侧（10名患者，77%25）和/或无效内膜消融位点对侧（11名患者，85%25）。